Riveting machine and the like



June 20, 1939 H. A. ToMKlNs A A 2,163,440

RIVETING MACHINE AND THE LIKE.'

Original Filed Dec. 7. v1935 5 Sheets-Sheet 1 Haro/d A. 75m /f/'ns June2'0, 1939. H. A. ToMKlNs y l 2,163,440

RIVETING MACHINE AND THE LIKE Original Filed Dec. 7, 1935 5 Sheets-Sheet2 gmwmv' wie 20, '1939. H, A, TQMKINS l 2,163,440

-RIVETING MAcmEAND THE LIKE Original Filled Dec. '7, 1935 5 Sheets-Sheet5 www Haro/d 75m/fins WMM,

@W www# YJune 2()a i939.k H, A, ToMKlNs 2,163,440

RIVETING MACHINE AND THE LIKE Original Filed Dec. '7, 1.955V 5Sheets-Sheet 4 gmc/MQ@ Haro/al 75m/fins Fig. a

June 20, 1939. H. A. ToMKzNs RIVETIG MACHINE AND THE LIKE Original FiledDec. '7, 1955 5 Sheets-Sheet 5 Patented June 20,

UNITED STATES PATENT OFFICE.

Harold A. Tomkins, deceased, assignors to Tomkins-Johnson Company,Jackson, Mich., a oorporation of Michigan Application December 7, 1935,Serial No. 53,404 Renewed September 28, 1938 i Claims.

The present invention relates to riveting machines and the like and moreparticularly to semiautomatic machines for clinching clinch nuts inholes in sheet metal plates.

In working with sheet metal it is often desirable that holes therein betapped for receiving bolts or screws for onepurpose or another in orderto provide the necessary strength. It is a common practice instead ofdrilling and tapping holes in the sheet metal itself to clinchinternally threaded bushings known as clinch nuts in holes. The presentmachine although it has numerous riveting and clinching applications isparticularly adaptable to clinching clinch nuts in holes in sheet metal.

An object of the present invention is to provide a machine forautomatically depositing clinch nuts or the like on an anvil and duringthe same cycle of automatic operation upsetting or clinching the clinchnuts or the like on the work operated upon.

Another object of this invention is to provide a machine of thecharacter described having its feeding mechanism automaticallycontrolled by compressed air or the like.

A further object of this invention is to provide a safety lock to permitthe cycle initiating mechanism to operate only at a predetermined periodin the operation of the cycle.

A still further object of this invention is to pro vide an improvedmechanical movement for ef fecting the operating movement of theupsetting or clinching die.

Other objects which include a novel, effective and eilicient arrangementand 'combination of elements will be apparent from the followingspecification when taken with the accompanying drawings in which:

Fig. 1 is a side elevation of the complete machine 'comprising thepresent invention,

Fig. 2 is a broken away section of the hopper and clinch nut conveyingchute,

Fig. 3 is a front elevation of the upper portion of the machine in asomewhat larger scale than that of Fig. 1,

Fig. 4 is a detail showing the clinch nut feeding ram and the locatingstop for the clinch nut when it is fed on the feeding carriage,

Fig. 5 is a partial section on the line V--V of Fig 3 disclosing thehopper rotating mechanism,

Fig. 6 is a broken away portion of the upper end of the right side ofFig. 1,

Fig. '7 is a section on .the line VII-VII of Fig.'8 with the clinch nuttransferring carriage and ram .in cxtreme retracted position,

Fig. 8 is a broken away section of a part of the machine showing theclinch nut transferring carriage and ram together with the clinch nutreceiving anvil and die cooperating therewith,

Fig. 9 is a broken awaysection showing the clinch nut transferringcarriage and ram operating piston and cylinder together with air con-`nections therewith,

Fig. 10 is a broken away section showing the lupsetting or clinching dieoperating mechanism,

Fig. 11 is a side elevation ofa portion of the machine showing thesafety catch and is the op,- posite side of the machine from that shownin Fig. 3,

Fig. 12 is a section on the line XII-XII of Fig. 11,

Fig. 13 is a detail showing the vertical section on the pressurereleasing valve operated by a shoe on the clinch nut transferringcarriage at the end of its forward movement, and

Fig. 14 is a detail showing a vertical section of a clinch nut clinchedto a piece'of sheet metal.

Referring particularly to Fig. 1 of the drawings the reference characterI indicates a base on 4which the frame 2 is supported. The'power fordriving the machine is supplied by a motor'3 which is connectedby a belt4 to the driving pulley 5. The clinch nuts to be operated on by themachine are placed in a hopper 6 from which they are fed to a carriage 1which deposits'them on an anvil 8 in position to be clinched Aor upseton the work by the die 9. Automatically and manually operablecontrolling mechanism hereinafter described control the movement of thecarriage 1. e

Fig. 2 discloses a broken away section of the hopper 6. The hoppercomprises a rotary cylindrical shell I4 having an internal spider I5supporting a bearing structure I 6 into which is fitted a fixed spindleI1. The spindle I1 is provided with a Vshoulder I8 against which .saidbearing structure rests whereby the shell I4 is supported...

of slots 23 each one being of such a size and configuration as toreceive a single clinch nut 24 in a predetermined relative position. Asdisclosed in Figs. 2 and 4 the clinch nuts 24 have on one side a flange25 and on the other side a circumi'erential tapered clinching lip 28.The clinch nuts 24 are also provided with a flat side 21 against which aram 28, later described, acts to position the clinch nuts 24 on theanvil 8.

A stirring vane 35 is made a part of one of the spider arms l5 at theouter end thereof and ex' tends to adjacent the conical base frame 28for the purpose of stirring and tumbling the clinch nuts 24 in thehopper to dispose one of them in eachof the slots 23 in a predeterminedrelation thereto. The base |9 is provided with an upstanding ledge 38which surrounds the lower edge of the shell |4 and prevents clinch nuts24 in the slots 23 from escaping. At one side of the hopper, arranged tocommunicate successively with f the slots 23 as the hopper is rotated,is provided an inclined chute 31 into which the clinch nuts 24 gravitatefrom the slots 23 and from which'k of a shaft 42 suitably journaled inthe machine` frame 2. A cam 43 shown in both Figs. 5 and 6 is mounted onthe opposite end of the shaft 42 from the gear 4| and acts against aroller follower 44 mounted on a plunger A45, resiliently butindirectlyurged against the cam 43 by the spring 48. The spring 48 bears againstthe shoulder 48 on the pin 49 to urge the pin 49 into engagement with apawl 58 pivoted on the plunger 45. The pawl 58 has an offset arm 5|angularly disposed with respect to the pawl 58,` against which the pin49 bears directly, making the pawl 58, in effect, a bell crank. Theaction of the spring 48 in addition to urging the plunger 45 and con- Asequently the'roller follower 44 against the cam 43 is to urge the pawl58 into contact with the annular ratchet 52 which encircles the hoppershell I4. It will be thus obvious that as the shaft 42 is rotated, thecam 43 will cause a reciprocation of the plunger 45 and with it the pawl58 to `"impart to the hopper 8 through the annular ratchet 52 anintermittent rotary motion.

'I'he lower end of the chute 31 terminates in a horizontal portion 55 asshown more particularly in Fig 7, where when the Acarriage 1 is in apredetermined position, the weight of the clinch nuts 24 in the inclinedchute 31 urges the clinch nuts 24 onto the outer end of the carriage 1.In order to prevent the clinch nuts 24 from being forced over thecarriage 1 a resiliently urged stop 58 is provided. Asshow'nparticularly in Fig. 4 when the clinch nuts 24- are delivered to thecarriage 1 the flat sides21 thereof are adjacent the ram 28. After a nuthas been disposed on the carriage 1 and is about to be transferred tothe anvil 8 it is rheld against accidental displacement by the retainingpin 51 on the outer end of the lever 58 pivoted in an open ended slot 59in the ram 28 as shown in Fig. 8. "y

'Ihe carriage 1 and the ram 28 are arranged to be reciprocatedby thepiston rod 88 shown in Figs. 8 and 9, which is in turn actuated by thepiston 8| shown in Fig. 9. The piston 8| is reciprocated ina cylinder 82by compressed air or` other suitable fluid alternately entering andexhausting through tubes 83 and 84 as determined by the controllingmechanism I8 shown in Fig. 1. 'I'he ports 85 and 88 communicating withthe cylinder 82 may be reduced in size, respectively, to decrease thespeed of operation of the piston 8| by screwing down the screw 81 and/orinserting a bushing in the threaded bore 88.. The cyli inder 82 and itsassociated structure are secured to the main frame 2 by a bracket 89 andare provided with a, guard 18 shown in Fig, 1.

The carriage 1 is mounted for relative moveand 8, having beveled edges12. 'Ihe plate 1| is secured by screws 13 to the ram 28 and is slidablymounted on the slideway 14 comprising a part of the frame 2. Alsosecured to the ram 28 is a shoe 15 slidably disposed in a groove 18. Theshoe 15 is secured to the ram 28 by screws 11 as shown particularly inFig. l1. Slidably passing through the shoe 15 and threadably secured tothe carriage 1 is a bolt 18 on which is mounted a spring 19, the actionof the spring 19 being that of yieldingly urging the carriage and theram apart a predetermined distance but permitting the ram to sliderelatively to the carriage adjacent the forward end of its Inovement,that is,

` to the left as shown in Fig. 8. It will be obvious that the plate 1|,the carriage 1 and the shoe 15 are securedtogether and moved together asa. unit. As shown in Figs. 3 and 8 plates 88, cooperating with thebeveled edges 12 of the plate 1|, are provided for laterally guiding thecarriage 1 and ram 28 unit during the greater partv of its outermovement.

Disposed directly over the ram'28 are rollers 8| and 82. The roller 8|is mounted on a rod 84 slidably mounted in the frame 85 so that as theram 28 is reciprocated by the piston rod 88, the rod 84 is elevatedduring that portion of the movement of the ram 28 that the high portion83 of the ram is directly beneath the roller 8|, that is, the roller 8|is cammed upwardly bythe high portion 83 of the ram 28. As shownparticularly in Fig. '1 the roller 8| is composed of two portions spacedto provide a clearance 88. As shown particularly in Figs. '7 and 8 thelever 58, pivoted about the pivot 81 in the slot 59 in the ram 28 andurged upwardly at one end by the spring 88, is thus straddled by theroller 8|.

The rod 84 has mounted on the upper end thereof a yoke 98 to the ends ofwhich there are secured depending rods 9| and 92 extending into end ofthe rod 9| has a stop 98. Disposed on the rods 9| and 92 between thebushings 95 and 98 and the stop 98 and pin 91, respectively, are springs99. The springs 99 have the function of urging the rod 84, its yoke v98and associated movable structure, including the pin 9,1, downwardly. Thepurpose of the pin 91 is to, under certain conditions, engage with thelast clinch nut 24 in the horizontal portion 55 of the chute 31 toprevent it from being moved. 'IIhe rod 9|, 'its stop 98 and its spring99 are for the purpose of balancing the yoke 98 structure.

Consider the carriage 1 and ram 28 as returning from the anvil 8. As thehigh portion 83 of vthe ram 28 moves against the roller 8|, the rodA 84and consequently the yoke 98 and pin 91 are of the ram 28. As thecarriage 1 and ram 28 con- `ment on a plate 1| shown particularly inFigs. '1

tinue to move to the right as shown in Fig. 8 the l lever 58 contactswith the roller 82 is is rotated about its pivot 81. The purpose of thisoperation is to lift the retaining pin 51 away from proximity to thecarriage 1 to permit the weight of the clinch nuts 24 in the inclinedchute 31 to push the last clinch nut'24 on the carriage 1 against theresilient stop -56 and beneath the retaining pin 51. At this point inthe operation the carriage 1 and the ram 28 has reached the rightmostlimit of their stroke. On the movement of the carriage 1 and ram 28toward the anvil 8 the lever 58 moves from beneath the roller 82permitting the pin 51 to drop into the recess in the top of the clinchnut 24 now on the carriage 1. On continued movement, the ram 28 movesfrom beneath the roller 8| permitting the rod 84, the yoke 90 and thepin 91 to lower, the pin 91 tting into the recess at the top of the lastclinch nut 24 in the horizontal portion 55 of the inclined chute 31,just before the ram -28 moves from retaining contact with the lastclinch nut 24.

The movement of the carriage 1 continues until it butts against theanvil 8. Then the ram 28, against the action of the spring 19, is movedforward to push the clinch nut 24 from the carriage 1 over the cutawayside |06 of the anvil 8 and into the recess ili'i therein. Atapproximately 4thesanie time the shoe 15 riding in the groove 16 andconnected to the carriage 1 strikes the exhausting valve 85, whichresults, in a manner to be explained, in a reversal in the direction ofmovement of the piston 6| in the cylinder 62 and consequently the pistonrod 68, carriage 1 and the ram 23. On the return movement of thecarriage i the pin 51 slides out of the recess in the top of the clinchnut 24 leaving the clinch nut 24 within the recess |81 in the anvil 8 inposition to be clinched or upset by the die 9.

The operation of the machine is initiated bv an operative applyingpressure to the treadle H8 which action results in transmitting throughthe clutch rod iii connected to the treadle M8 a cycle-initiatingimpulse to the clutch operating mechanism H2. The clutch operatingmechanism H2 may be of any standard type where in a single initiatingimpulse results in the movement of the associated mechanism through anentire cycle. although it is preferred that it be like that disclosed inthe copending application of Robert Hofstetter, Serial No.V 36,061.iiled August lli, 1935, now Patent Number 2.691.362, granted August 31.1937. The main shaft l|3 driven from the pulley 5 is journaled inbearings H mounted in the main frame 2. To the shaft I3 at the portionthereof adjacent the main por' tion of the frame 2 is secured a crank||5 about which is journaled one end of a connecting rod H6. Theconnecting rod H8 is pivoted to the center of a toggle i1, the togglecomprising links H8 and H9. One end of the toggle ispivoted to the mainframe 2 while the other end is 'nivoted to a cross head |28. Theclinching die V9 is secured to the cross head |28 so that as the shaft I|3 is rotated by the pulley 5 the connecting rod H6 is reciprocated bythe crank H5 to operate the toggle H1, which in turn reciprocates thecross head |28 and the clinching die 9. The connecting r'od l IB isconnected to the crank |5 and the toggle |I1 in such a manner that vasthe toggle is straightened out the crank ||5 is on dead cent'er towardthe toggle H1 thus resulting in both the toggle and the crank deliveringa maximum forceat the same time.

A safety device not essential to the operation of the machine but highlydesirable is disclosed particularly in Figs. 11 and 12. Fig. l1 is thatportion of the machine which is a continuation of the-lower part of Fig.6 the opposite side of which is includedin Fig. 3.

Referring particularly to Fig. l2 the end of the ram 28 nearest theanvil 8 is shown. Extending into the path of the ram 28 through theframe 85 end |29 of the bell crank lever |21 is in engagement with theclutch rod Thus, it is only when the carriage 1 is in its rearwardposition where it has received the clinch nut E4 that the plunger 25 iscammed outwardly to release the hooked end |29 of the bell crank lever|21 from the clutch rod i I, that the clutch rod iii can be lowered toinitiate a cycle of operation of the machine.

The operation of my machine together with the description of themechanism for controllingA the compressed air for actuating the piston6i is as follows: Referring particularly to Fig. 1 the compressed aircontrolling valve i355 of the type disclosed in the copendingapplication ci. Oscar G. Tweddell, Serial No. 733,617, led July 3, 1934,is secured to the main frame 2 of the machine. Brieiiy, the compressedair controlling valve 35 comprises a movable member for distributing icompressed air alternately from an inlet to each At the completion ofthe previous cycle of op-` eration a clinch nut has been disposed in therecess ||i1 in the anvil 8 and the carriage 1 and ram 28 have beenretracted to their rearmost position, that is, to the right, as shown inFig. 8. The first operation is to place the sheet metal on the anvil insuch a manner that the tapered edge 260i the clinch nut extends throughthe hole in the sheet metal in which the clinch nut 24 is to be secured.

The operative then depresses the treadle ||8 which operation draws downthe clutch rod i and initiates a cycle of operation of the machinethrough the clutch controlling mechanism H2.

Uponl the beginning of the cycle of operation of the machine thecrank||5 rotates to move the connecting rod i6 to straighten out the toggleH1' and'iorce down the die 9 to upset or clinch the tapered ends 26 ofthe clinch nuts 24 over the edges oi the hole in the sheet metal asshowns.

` particularly in Fig. 14. Continued rotation of the lcrank ||5withdraws the die 9 permitting the operative to remove the sheet metalwith the4 secured `clinch nuty fromthe anvil 8. By this time theprotuberan'ce |38 rotated with the shaft H3 and the crank H5 and shownin Fig. 6 engages With the pressure releasing valve |39 to exhaustpressure from the left side of the compressed air controlling valve |35shown in Fig. l, through the v through the tube 63.

tube |46. The result of this exhausting is to providey a direct passagefor compressed air from the inlet |36 through the controlling valve |35to the right side of the cylinder 62 behind the piston 6|, through thetube 64. 'I'he piston 6| is then driven to the left as viewed in Fig. 1moving the clinch nut transferring carriage 1 which by' this time hasreceived the clinch nut from the horizontal portion 55 of the inclinedchute 31 as illustrated in Fig. 7, and the ram 26 until the carriage andram 26 reach the dotted line position shown in Fig. .8 which is at theend of the extreme forward movement. During this move- -ment the air inthe opposite or left side of the cylinder 62 is exhausted through thetube 63 and the port |45, the latter being in the body of thecontrolling valve |35. In this position the shoe 15 contacts with thepressure releasing valve |05 to release the pressurein the right side ofthe compressed alr controlling valve |35 through the tube |46. Theresult is that compressed air from the inlet |36 is conducted throughthe controlling valve |35 to the left side of the cylinder' 62 'I'hepiston 6| is then driven 'to the right, returning by means` of thepiston rod 60, the carriage 1 and the ram 23 to the extreme retractedposition and leaving the clinch nut 24 in the recess |61 of the anvil 6.At the same time air from the right side of the cylinder 62 is exhaustedthrough the tube 64 and the port |41 in the body of the controllingvalve |35. A complete cycle of operation is thus completed and theoperation of the machine stops until started again by depressing thetreadle Ill.

While the application of this machine has been described as securingclinch nuts to sheet metal it is not intended that it be so limited forit may be equally applicable to other riveting and upsetting operations.Furthermore, itis contemplated that if desirable other mechanism beemployed to reciprocate the carriage 'l and the ram 23 althoughcompressed air is desirable because in the event that the operative isunable to remove the work from the anvil 6 before the carriage moves todeposit another clinch nut on the anvil 6 or the mathe impositive actionofthe compressed air prevents the spoiling of the work or the damagingof the carriage.

Having thus described my invention what I desire to secure by LettersPatent and claim is:

l. A machine of the character described comprising a ilxed anvil, a'reciprocable carriage, means to dispose an Vupsettable member on saidcarriage and means to transfer the upsettable member from said carriageto said anvil.

y 2. A machine of the character described comprising an anvil, a sourceof supply of upsettable members, means to .transfer said upsettablemembers from said source, one at a time, to said anvil, said meanscomprising a carriage and a ram for l moving said upsettable member fromsaid carriage to said anvil, and means to upset said members while onsaid anvil.

3. A machine of the character described comprising an anvil, a sourcefor upsettable members, a carriage to convey said upsettable members,one at a time. to said anvil, means for conveying said-upsettablemembers from said source to said carriage, means to upset said membersw'hile on said anvil, driving mechanism for said machine to operate saidupsetting means, and means controlled by said driving mechanism to movesaid carriage toward said anvil and con-I away from said anvil.

4. A machine of the character described com' prising an anvil, a sourcefor upsettable members, a carriage to convey said upsettable mem-v bers,one at a time, tov said anvil, means for conveying said upsettablemembers from said source to said carriage, means to upset said memberswhile on said anvil, driving mechanism for said machine to operate saidupsettingv means, controlling mechanism included in said drivingmechanism for limiting said driving mechanism for operation during ,asingle cycle of the machine only, means for imparting an actuatingimpulse to said controlling mechanism, and locking means controlled bysaid carriage to prevent operation of said impulse actuating meansduring predetermined positions of said carriage.

5. A machine of the character described com-- for moving said upsettablemembers from saidy carriage onto said anvil, and yieldable means formaintaining said carriage and ram in a predetermined relation butpermitting said ram to be moved relatively to said carriage, and means[i .to upset said members while on said anvil.

6. A machine of the character described comprising an anvil, a source ofsupply of upsettable members, means to transfer said upsettable membersfrom said source, one at a time,

to said anvil, said means comprising a carriage,

a ram for moving said upsettable members from said carriage onto saidanvil, means to upset Said members while on said anvil, drivingmechanism to operate said upsetting means, compressed air mechanism.forreciprocating said carriage and ram, a source of compressed air andmeans for controlling the i'low of compressed air to said compressed airmechanism, said means comprising a valve controlled by said drivingmechanism and by said carriage. f

7. A machine of the character described comprising an anvil, areciprocable member arranged to receive an upsettable member to transferthe same to said anvil, a pivoted lever resiliently urged toward saidreciprocable member and against said upsettable member to hold saidupsettable member against displacement, and means to upset said memberwhile on said anvil.

8. A machine of the character described comprising an anvil, a source ofsupply of upsettable members, means to transfer said upsettable membersfrom said source, one at a time, to said anvil, said means comprising acarriage, a ram for moving said upsettable members from said carriageonto said anvil, and yieldable means for maintaining said carriage and,ram in a predetermined relation but permitting said ram to be removedrelatively to said carriage, a member pivoted on said ram yieldinglyurged against the upsettable members on said carriage as they aretransferred to prevent displacement, and means to upset said upsettablemembers while on. said anvil.

9. A machine of the character described comcarriage and into engagementwith the upsettable member on said carriage to prevent its displacement,a cam fixed with respect to said rim and carriage for camming said leveraway from said carriage on a predetermined movement of said carriage andram to permit an additional upsettable member to be disposed on saidcarriage, and means for upsetting said 'members while on said anvil.

-10. A machine of the character described com-y prising an anvil, asource for upsettable mem` `to said carriage, means resiliently urgedagainst the last upsettable member in said gravity conveying means toprevent the feeding-of the same, means cammed by said transferring meansfor removing said resiliently urged means to permit the last upsettablemember in said gravity conveying means to move onto said carriage, saidcamming by said transferring means being timed with respect to themovement of said transferring means, and means to upset said membersWhile on said anvil. c

11. A machine of the character described'comprising an anvil, a sourcefor upsettable members, means to transfer upsettable members from saidsource to said anvil, said means comprising a carriage a Vrarn formoving said upsettable members from said carriage onto said anvil,yieldable means for maintaining said carriage and ram in a predeterminedrelation but permitting said ram to be moved relatively to saidcarriage, and means for conveying under the action of gravity upsettablemembers from said source to said carriage, a lever pivoted in said ramand yieldably urged toward said carriage against an upsettable memberthereon for preventing displacement thereof, meana fixed relatively tosaid transferring means to cam said lever away from said carriage at apredetermined movement of said carriage to permit another upsettablemember to be disposed on said carriage upon movement of saidtransferring means adjacent thereto, means resiliently urged against thelast upsettable member in said gravity conveying means to preventthe'feeding of the same, means cammed by said transferring means forremoving said resiliently urged means to permit the'last upsettablemember in said gravity conveying means to move onto said carriage, saidcamming by said transferring means being timed with respect tothemovement of said transferring means, and means to upset said memberswhile on said anvil.

12. A machine of the character described comprising an anvil, a sourcefor upsettable members, means to transfer said upsettable members fromsaid source to said anvil, said means comprising a carriage, a ram formoving said up-l settable members from said carriage onto' said anvil,yieldable means for maintaining said carriage and ram in a predeterminedrelation but permittingsaid ram to be moved relatively to saidcarriage,`and means for conveying under the action of gravity upsettablemembers from said hopper to said carriage, a lever pivoted in said ramand yieldably urgedtoward said carriage against an upsettable memberthereon for preventing displacement thereof, means xed relatively tosaid transferring means to cam said lever away from said carriage topermit another upsettable member to be disposed on said carriage uponmovement of said transferring means adjacent thereto, means resilientlyurged against the last upsettable member in said. gravity conveyingmeans to prevent the feeding of the same, means cammed by saidtransferring means for removing said resiliently urged means to lpermitthe last upsettable member in said gravity conveying means to move ontosaid carriage, said camming by said transferring means being timed withrespect to the movement of said transferring means, means to upset saidmembers while on said anvil, driving mechanism for said machine tooperate said upsetting means, and means controlled by said drivingmechanism to move said carriage toward said 'anvil and controlled bysaid carriage to move said carriage away from said anvil.

13. A machine of the character described comprising an anvil, a sourcefor upsettable members, reciprocable means for conveying upsettablemembers, one at a time, to said4 anvil, means for conveying saidupsettable members from said source .to said reciprocable means, meansto upset said members while on said anvil, driving mechanism for saidmachine to operate said upsetting means, and means controlled by thedriving mechanism to move said reciprocable means toward said anvil andcontrolled by said reciprocable means to move said reciprocable meansaway from said anvil.

14.' A machine of the character described comprising an anvil, a sourcefor upsettable members, reciprocable means to convey said upsettablemembers, oneat a time, to said anvil, means for conveying saidupsettable members from said source to said reciprocable means, means toupset said members while on said anvil, driving mechanism for saidmachine to operate said up. setting means, controlling mechanismincluded in said driving mechanism for limiting said driving mechanismfor operation during a single.

cycle only of the machine, means for imparting an actuating impulse tosaid controlling mechanism, and locking means controlled by saidreciprocable means to prevent the operation of said impulse actuatingmeans during predetermined positions Vof saidA reciprocable means.

15. A machine of the character described, com- -prising an upsettingstation including anl anvil elevated above its adjacent associatedstructure to provide clearance upon all sides of said anvil and belowthe level thereof, a loading station located a substantial distance toone side of said ilrst station, a source of supply of upsettablemembers, means for transferring said upsettable members from saidsourceto said `loading station, and a carriage for bodily supporting andtransferring said upsettable members from said loading station to saidelevated anvil.

HAROLD A. TOMKINS.

. CERTIFICATE 0F c'oRREcTIoN. Patent No. 2,l65',h)40. June 20, 1959.

' HAROLD'y A. ToMKINs. A

`It is hereby certifie'dthat error appears4 in the printedspecification' Vof the above numbered patent requiring correction esfollows: Page 5, first column, line. 10, for' the ,word "has" re'adhave; pageS, first column, line 7, claim 9, for "rim" read ram; lamisecond'column, line, claim l2, for

"hpper" `read source; and that the said Letters Patent should be readwith this correction` therein that the. same may conform to the recordof the lcease in the' Patent office.

Signedend sealed this'lst day. of' August, A. D. 1959.

Henry van .Ar-saale (Seal) Acting. Commissioner of Patents.

